Spinning frame



Sept. 23} 1941- w. S.,IEASTMA4N 2,257,044

SPINNING FRAME Filed June 19, 1940 Patented Sept. 23, 1941 SPINNING FRAME Walter S. Eastman, Glendale, R. I., assignor to Stillwater Worsted Mills, a corporation of Rhode Island Application June 19, 1940, Serial No. 341,323

20 Claims.

My invention relates to spinning frames.

It has among its objects to provide an improved pressure mechanism of the type adapted to cooperate with the upper front roll of such a frame in divorcing the twisting of the yarn from the drafting function of the front rolls. A further object of my invention is to provide such improved pressure mechanism whereby it is made possible to improve prior devices of this type by eliminating the pressure roll heretofore used and the waste incident to lapping around such rolls,-as well as the lubrication and other problems incident to such rolls. Other objects are to provide an improved pressure means adapted to cooperate in an improved manner with the top front drafting roll, and such an improved pressure means which is easier to control and adjust than such a pressure roll, and

which reduces yarn breakage while enabling production to be increased. Still further objects of my invention are to provide an improved pressure means providing an enlarged concave pressure surface pressing the yarn against the top front roll in such manner as to provide more effective control and protection for the fibres in the interval between drafting and twisting, and also to provide such an improved construction having improved yarn supporting means whereby the fibres are more effectively kept in their desired relative positions as they pass from the nip of the front rolls to and through the improved pressure means cooperating with the top front roll. Other objects of my invention include the provision of an improved attachment adaptend of the pressure mechanism with the pressure plate carried thereon, and

Fig. 6 is a bottom plan view of the pressure plate.

In this illustrative construction, I have shown a spinning frame of standard construction and including a usual carriage stand I carrying usual drafting mechanism including front lower-fluted rolls 2 andcooperating cork covered or other suitable top rolls 3, as well as usual closed pigtail guides 4 disposed above the caps- 5 of usual shirled bobbins 6; my improvements herein relating to improved pressure means; hereinafter described, and also adapted to cooperate in an improved manner with the top front rolls 3 and carried on a usual lateral front extension on a usual swinging pressure frame 1 biased to operative position and pivoted in a usual manner on the front saddle bar of the stand I.

These improved pressure means herein include improved pressure plates, generally indicated at 8, and each adapted to cooperate with oneof the top front rolls 3, while each is carried by its own individual pressure frame I and pressed thereby against the under side of its cooperating roll 3. Herein, each of these plates .8 is of substantially the length of the roll 3 and' has a curved upper yarn pressing surface 9 of substantial width and substantially conforming to and receiving a substantial part of the bottom portion of the periphery of the roll 3. Preferably the member 8 is formed of metal, and this surface 9 is a polished surface. Herein also it will be observed that a rounded edge I0 is proed to cooperate in an improved manner with the vided on the rear edge of the plate 8, and that top front roll of a standard spinning frame while enabling the above advantages to be obtained, and such an improved attachment adapted to be applied to such a frame at small expense. These and other objects of my improved construction will, however, hereinafter more fully appear.

In the accompanying drawing, I have shown .for purposes of illustration one embodiment an enlarged and rounded edge portion I l is provided along the opposite or front edge of the plate for supporting the yarn after it is freed ,frompressur'e andbefore it passes downward over the rounded surface of the portionl I to the pigtail 4, this edge portion II preferably also having its upper surface polished similarly to the surface 9. While other constructions may be utilized, I herein form the plate, 8 and this edge portion H of separate members integrally united, the plate herein'being a thin steel plate, as, for example, a 5" plate, and bent to 'fit the top front roll, and the front edge portion H herein being in the form of a short length of round solid steel rod suitably welded along one side thereof to the plate 8, as at l2. In a preferred construction, the under adjacent edge of the plate is also bevelled or cut away to provide a smooth junction between the plate and the adjacent surface of the rod, while. the latter surface pr'ovides a smooth, rounded downwardly directed continuation of the surface 9 leading directly toward thecenter of the pigtail 4. Further, on the under side of the plate 8 I herein suitably form or attach a universal or ball joint receiving socket member l3, centrally located both longitudinally and transversely relative to the plate 8. Herein, .this socket member J3 receives a ball M on anupstan'ding' portion R5 at the extremity of a transverse portion 16 on the front end of the swinging, herein weighted, pressure frame 1; this ball M herein being welded to the upper end of the portion l5.

In the operation of my improved construction, the plate 8 provides a pressure surface of substantial area in contact with and con'formingto the curved under surface of the cork covered roll 3, as compared with a pressure roll-wherein top roll is obtainable. Further, it will be observed :that the .p ate :provides, "in effect, "an elongated carrier :or-eonvey'or supporting and pressing against 'i'the roll :3 ia 'substantial part of the length of the section of thread, indicate'd at sllpWhich extends :between :th'einip of the front fdraftingmollsfizandi3s'and the :front edge :H of the iplatelil "where Tit will :be 5 observed that twis Zing :hegins in .othis construction. "Thus, it willbe TObSBI'VBd that this plate, .with "its substantially a *pressure zroll, 'acts to i keep :the fibres in 'their relative :positions *atamewttime, i. e. when, there 'beingl'noztwist;.a'oting to zkeep the fibres together, theywoul'd wvith1=a pressure {I611 .onlybe main- :tained in lthrea'ii fform .:due to Itheir a'fiinity ifor 'each other. l'Ihus,-in my improved construction,

the fibresan'eimoreizeffectivelyJcontrolled andprotected Eloy zmy improved 1 plate which very effecfonly a line contact-between the latter -and-the tively acts .to keeprthe fibres-inftheir desired relative ipositions :in :the rth're'a'd :until twisting which :he'rein begins at tthe 'frontedge Fl I of l'the greaterwpressure surface area ascompare'dwith pared with a pressure roll, and to the advantages of the plate as regards freedom from trouble in operation, longer life, and elimination of need for lubrication. These and other advantages of my improved construction will, however, be clearly apparent to those skilled in the art.

While I have herein specifically described one embodiment which my invention may assume in :practiceiit willbe understood.thatthisjform has been shown for purposes of illustration, and that ..the invention may be modified and embodied in other forms without departing from its spirit or the scope of the appended claims. 7

What I,claim as new and desire to secure by LettersiPatent is:

lfIn .a spinning frame, cooperating front drafting rolls, and means including an elongated yarn supporting carrier extending lengthwise along the yarn beneath the upper roll for maintaining the yarn under pressure and laterally spacingthe-beginning ofetwisting from thepressed portion of jtheyarn. j

.2. .In a spinning frame copperatingfront draft- .ing 1011s, :and means including ran-elongated yarn supporting carrier extending lengthwise along the *yarn {for enclosing and pressing against the uppenfront @roll, the yarn passing laterally from 'the nip iof saidrrolls. V l

:3.TIn a "spinning frame, cooperating lfront drafting -rolls, and mechanism 7 for 1 divorcing the .twistingof :the yarn fromzthe, drafting function of said roll-s including pressure means acting ,on assfibstantialflength: of the yarn and maintaining :the latter :under pressure .=in .-front of the .nip ,of

"said'rolls. I

4.'In a spinning rframe, cooperating front drafting rolls, :and mechanism for divorcing vthe .twisting of :the yarn from the drafting function of "said: rollsiineluding. pressure means; acting on *{0 :asubstantial lengthiof the yarn and maintainin the latter :under pressure againsta portionof theiperiphery 'of the'topfront'roll.

in :a aspinning frame; cooperating front :"drafting'*rolls, and mechan'ismf divorcing n18 Ftwisting ctfunction ("from the drafting function ithereoflincluding a pressure-plate conformingto drafting rolls, and mechanism fordivorcinglthe a :greater :quantity "of roving without causing,

ttlfllble tthan iitiis :possible :to ":wind on :a small pressure roll, While "the .fa'ccumulate'd roving :is ealsormorezeasily removablefromithe larger rollifi. lEurthler, warn break-age: is materialiyreduced' due lto the dncreased protection ifor the "yarn :as it spasses through the stage Zbetween "the :compl'ertion "of the :Jdraf t and ithe rbegirming *of twisting, int such mannerfasf to :enable production lto \be' intcreased. rAttention its also :directed to the tfa'et I :tliatzfiie correctilo'catio'n oftherplate relative' to .theirolh3 .is: insured? byithe :curvatureiof the :plate -hzetpressedupward "against :tl'reiunderssi'de of the rrolls3 i'bytth-e :press'ure 1.111961181115111, this :connecftiOIi twill enablecthe plat'eztozcnnform 'tOYthBYT OH necessary. :Atte'ntiom is aiso dire'cted f-to'the twisting "function from the drafting Junction thereof *including a -.pressure plate pressing the 'yarn'againstthe-top-zfrent roll over=a yarn .supporting area .of' substantial width and length to :maint-ain: thefibres intheir relative positions.

7.'In -a spinning fr-arne, cooperating front drafting rolls, and-meel'ianisrn for divorcing .the "twisting function from the draftingfunction .thereof including a concave pressure platepressing' the yarn-ag-ainst the top .front roll. and hav- ":ing a :yarn supporting front edge sloping away from said roll.

z8.':In 'a spinning twistingiof the 'ya-rnfromthedrafting functioneof said rolls including a concave pressure-means "pressing the -yarn "against the ,bottom of the-top front roll :and having an'enlargedroimdedand downwardlydirected 'yarn supportingedge ;por-

tion in front of the concave portion thereof .later- -ally spacing the beginning-.oftwisting from :the

' latter.

9.*In a spinning frame, cooperating front drafting rolls, and mechanism for divorcing the 1 simplicityooftheiniprowedcplaterstructureasccomftwisting function .:from ,the drafting function frame, cooperating front drafting *rolls, and mechanism 1 f or divorcing the thereof including a concave pressure plate pressing the yarn against the periphery of the top front roll and having downwardly rounded front and rear edges.

10. In a spinning frame, cooperating front drafting rolls, and mechanism for divorcing the twisting function from the drafting function thereof including a concave pressure plate pressing the yarn against the top front roll and a pressure frame maintaining said plate in operative position.

11. In a spinning frame, cooperating front drafting rolls, and mechanism for divercing the twisting of the yarn from the drafting function of said rolls including means for pressing the yarn against the periphery of the top front roll and directing broken yarn toward the latter for lapping thereon.

12. In a spinning frame, cooperating front drafting rolls, and mechanism for divorcing the twisting function from the drafting function thereof including a concave pressure plate pressing the yarn against the top front roll, a pressure frame maintaining said plate in operative position, and adjustable connecting means between said plate and frame for enabling relative movement between the latter.

13. In a spinning frame, cooperating front drafting rolls, and mechanism for divorcing the twisting function from the drafting function thereof including a pressure plate pressing the yarn against the top front roll and a pressure frame maintaining said plate in operative position and having a ball and socket connection between said plate and frame centrally located relative to the latter.

14. In a spinning frame, cooperating front drafting rolls, and mechanism for divorcing the twisting of the yarn from the drafting function of said rolls including a pressure frame biased to operative position and having an upstanding extension underlying the top front roll, yarn supporting means pressing the yarn against said top front roll, and a universal joint between said pressure means and said extension.

15. In an attachment for spinning frames having cooperating front drafting rolls, a pressure frame, and a pressure plate carried thereby and having a contact surface of substantial area adapted to be pressed by said pressure frame against the top front roll,

16. In an attachment for spinning frames having cooperating front drafting rolls, a swinging pressure frame, and a pressure plate carried thereby and having a concave contact surface of substantial area adapted to be pressed by said pressure frame against the top front roll.

17. In an attachment for spinning frames having cooperating front drafting rolls, a swinging pressure frame, and a pressure plate carried thereby and having a contact surface of substantial area adapted to be pressed by said pressure frame against the top front roll, said pressure plate being concave and having a swivel connection to said frame enabling said plate to conform to the roll.

18. In an attachment for spinning frames having cooperating front drafting rolls, a swinging pressure frame, a pressure plate having a concave contact surface of substantial area adapted to be pressed by said pressure frame against the top front roll, and a ball and socket connection between said plate and said frame.

19. In an attachment for spinning frames having cooperating front drafting rolls, a pressure plate having a concave pressure face, an enlargement forming the front edge of said plate, and a rounded yarn supporting surface on said enlargement.

20. In an attachment for spinning frames having cooperating front drafting rolls, a pressure plate having a concave pressure face and an enlarged rounded front edge and a rounded rear edge oppositely directed with respect to said front edge.

WALTER S. EAS'IMAN. 

